I just released 0.14.2. 0.14.1 has been released last week, but not announced, becuase I found a critical bug I introduced quite recently (to fix another crasher, actually). Main news for both versions are:

GChemPaint:

Do not allow a mesomery destruction when inside a reaction.

Fix molecule deletion inside a mesomery.

Fix reactant deletion inside a reaction.

Don't crash when a mesomery inside a reaction is destroyed.

Check molecule consistency when loading, avoids a stack overflow.

Enhanced representaion of chiral molecules imported from CML and other formats.

Fix crash when deleting a cyclic bond.

Fix crash when loading some molecules (was introduced in 0.14.1 when fixing the stack overflow issue and is fixed in 0.14.2).